{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,20]],"date-time":"2026-09-20T18:09:33Z","timestamp":1789927773239,"version":"4.0.1"},"reference-count":40,"publisher":"Wiley","issue":"9","license":[{"start":{"date-parts":[[2012,1,9]],"date-time":"2012-01-09T00:00:00Z","timestamp":1326067200000},"content-version":"vor","delay-in-days":2321,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Biology of the Cell"],"published-print":{"date-parts":[[2005,9]]},"abstract":"<jats:p>PD (peritoneal dialysis) is an established mode of renal replacement therapy, based on the exchange of fluid and solutes between blood in peritoneal capillaries and a dialysate that has been introduced into the peritoneal cavity. The dialysis process involves diffusive and convective transports and osmosis through the PM (peritoneal membrane). Computer simulations predicted that the PM contains ultrasmall pores (radius &lt;3 \u00c5, 1 \u00c5=10<jats:sup>\u221210<\/jats:sup> m), responsible for up to 50% of UF (ultrafiltration), i.e. the osmotically driven water movement during PD. Several lines of evidence suggest that AQP1 (aquaporin\u20101) is the ultrasmall pore responsible for transcellular water permeability during PD. Treatment with corticosteroids induces the expression of AQP1 in the PM and improves water permeability and UF in rats without affecting the osmotic gradient and permeability for small solutes. Studies in knockout mice provided further evidence that osmotically driven water transport across the PM is mediated by AQP1. AQP1 and eNOS (endothelial nitric oxide synthase) show a distinct regulation within the endothelium lining the peritoneal capillaries. In acute peritonitis, the up\u2010regulation of eNOS and increased release of nitric oxide dissipate the osmotic gradient and prevent UF, whereas AQP1 expression is unchanged. These results illustrate the usefulness of the PM to investigate the role and regulation of AQP1 in the endothelium. The results also emphasize the critical role of AQP1 during PD and suggest that manipulation of AQP1 expression may be used to increase water permeability across the PM.<\/jats:p>","DOI":"10.1042\/bc20040132","type":"journal-article","created":{"date-parts":[[2005,8,24]],"date-time":"2005-08-24T12:55:20Z","timestamp":1124888120000},"page":"667-673","source":"Crossref","is-referenced-by-count":21,"title":["Aquaporin\u20101 in the peritoneal membrane: implications for peritoneal dialysis and endothelial cell function"],"prefix":"10.1111","volume":"97","author":[{"given":"Olivier","family":"Devuyst","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jie","family":"Ni","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jean\u2010Marc","family":"Verbavatz","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2012,1,9]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.1113\/jphysiol.2002.020818"},{"key":"e_1_2_9_3_1","doi-asserted-by":"crossref","first-page":"119","DOI":"10.1177\/089686089901900208","article-title":"Changes in volume of peritoneal mesothelial cells exposed to osmotic stress","volume":"19","author":"Breborowicz A.","year":"1999","journal-title":"Perit. 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